Nasal Cavity & Nasopharynx

Question 1

what bones make up the nasal cavity?

Answer 1

• nasal bones
• maxilla (frontal & palatine processes)
• frontal (nasal spine)
• ethmoid (cribriform plate)
• palatine (horizontal plate)
• vomer

Question 2

what forms the roof of the nasal cavity?

Answer 2

• cribriform plate of ethmoid
• body of sphenoid

Question 3

what forms the floor of the nasal cavity?

Answer 3

hard palate

Question 4

what forms the medial wall of the nasal cavity?

Answer 4

nasal septum

Question 5

what forms the lateral wall of the nasal cavity?

Answer 5

nasal conchae

Question 6

which nasal conchae are part of the ethmoid bone?

Answer 6

superior & middle
(inferior is its own structure/bone)

Question 7

name the 3 types of nasal cartilages

Answer 7

• 2 lateral
• 2 alar
• 1 septal

Question 8

the sphenoethmoidal recess is the opening for the ____

Answer 8

sphenoidal sinus

Question 9

location of ethmoidal bulla

Answer 9

middle nasal meatus

Question 10

the semilumar hiatus is the location of the opening for the ____ & ____ sinuses, and is located in the ____

Answer 10

• frontal & maxillary
• middle nasal meatus

Question 11

the inferior nasal meatus contains the opening for the ____

Answer 11

nasolacrimal duct

Question 12

the superior nasal meatus contains the opening for the ____

Answer 12

posterior ethmoidal sinuses

Question 13

name the arteries of the nasal cavity

Answer 13

• anterior & posterior ethmoidal
• sphenopalatine
• greater palatine
• superior labial
• lateral nasal

Question 14

anterior and posterior ethmoidal arteries originate from the ____

Answer 14

ophthalmic a

Question 15

superior labial & lateral nasal arteries originate from the ____

Answer 15

facial a

Question 16

the pterygoid plexus of veins travels with the…

Answer 16

maxillary a branches

Question 17

veins travelling with the ophthalmic artery branches communicate with the ____

Answer 17

cavernous sinuses

Question 18

innervation of anterosuperior region of nasal cavity

Answer 18

ophthalmic (V1):
- anterior & posterior ethmoidal nn (branches of nasociliary n)

Question 19

innervation of posteroinferior region of nasal cavity

Answer 19

maxillary (V2):
- nasopalatine nn
- greater palatine nn

Question 20

the nasal cavity is continuous posteriorly with the ____

Answer 20

nasopharynx

Question 21

location and contents of pterygopalatine fossa

Answer 21

• pyramidal space inferior to orbit & medial to infratemporal fossa
• contains third (terminal) part of maxillary a and n (V2)

Question 22

the third part of the maxillary artery is called the ____

Answer 22

pterygo-palatine part of maxillary a

Question 23

describe the path of the pterygo-palatine part of the maxillary artery

Answer 23

passes through infratemporal fossa into pterygopalatine fossa via pterygomaxillary fissure

Question 24

the pterygopalatine part of the maxillary artery gives off what 2 branches?

Answer 24

sphenopalatine a
descending palatine a

Question 25

the descending palatine artery gives off what 2 branches?

Answer 25

greater & lesser palatine a

Question 26

the maxillary nerve enters through ____

Answer 26

foramen rotundum

Question 27

the maxillary nerve gives off the ____ in the pterygopalatine fossa

Answer 27

zygomatic n

Question 28

the zygomatic nerve divides into what 2 nerves?

Answer 28

zygomaticotemporal zygomaticofacial

Question 29

function of zygomaticotemporal nerve

Answer 29

conveys postganglionic PSNS fibers to the lacrimal gland

Question 30

the maxillary nerve suspends the ____

Answer 30

pterygopalatine (sphenopalatine) ganglion

Question 31

the maxillary nerve leaves through the ____ and continues as the _____ nerve

Answer 31

inferior orbital fissure infraorbital n

Question 32

the pterygopalatine ganglion receives what nerve?

Answer 32

nerve of the pterygoid canal (vidian n)

Question 33

what forms the nerve of the pterygoid canal (vidian n)?

Answer 33

- greater petrosal n - deep petrosal n

Question 34

what fibers does greater petrosal nerve carry?

Answer 34

preganglionic PSNS fibers from CN VII

Question 35

what fibers does deep petrosal nerve carry?

Answer 35

postganglionic SNS fibers from internal carotid plexus

Question 36

fibers from the pterygopalatine ganglion provide sensory to the...

Answer 36

nasal cavity palate superior pharynx

Question 37

fibers from the pterygopalatine ganglion provides PSNS & SNS fibers to the...

Answer 37

lacrimal, nasal, palatine & pharyngeal glands & mucosa

Question 38

name the functions of the pterygopalatine ganglion

Answer 38

- sensory - secretomotor PSNS - vasoconstrictive SNS